fix many compile warnings

veejay-current/veejay-server/libel/avilib.c

@@ -132,6 +132,7 @@ uint64_t AVI_MAX_LEN = (UINT_MAX-(1<<20)*16-HEADERBYTES);
 uint64_t AVI_set_MAX_LEN( uint64_t n )
 {
 	AVI_MAX_LEN = n;
+	return n;
 }
 
 uint64_t AVI_get_MAX_LEN()
@@ -1041,7 +1042,7 @@ static int valid_info_tag(char *c)
 // returns the length of written stream (-1 on error)
 static int avi_parse_comments (int fd, char *buf, int space_left) 
 {
-    int len=0, readlen=0, k;
+    int len=0, k;
     char *data, *c, *d;
     struct stat st;
     
@@ -1060,8 +1061,9 @@ static int avi_parse_comments (int fd, char *buf, int space_left)
 	return -1;
     }
 
-    readlen = avi_read ( fd, data, st.st_size);
-
+    int readlen = avi_read ( fd, data, st.st_size);
+    if( readlen < 0 )
+	return -1;
     //printf("Read %d bytes from %d\n", readlen, fd);
 
     c = data;

veejay-current/veejay-server/libel/lav_io.c

@@ -678,7 +678,6 @@ int lav_write_frame(lav_file_t *lav_file, uint8_t *buff, long size, long count)
 
 int lav_write_audio(lav_file_t *lav_file, uint8_t *buff, long samps)
 {
-	int res;
 #ifdef HAVE_LIBQUICKTIME
    int i, j;
    int16_t *qt_audio = (int16_t *)buff, **qt_audion;

veejay-current/veejay-server/libel/vj-el.c

@@ -1208,7 +1208,6 @@ int	vj_el_get_video_frame(editlist *el, long nframe, uint8_t *dst[3])
 	uint8_t *data = ( in_cache == NULL ? d->tmp_buffer: in_cache );
 	int inter = 0;
 	int got_picture = 0;
-	int in_uv_len = 0;
 	uint8_t *in[3] = { NULL,NULL,NULL };
 	int strides[4] = { el_len_, el_uv_len_, el_uv_len_ ,0};
 	uint8_t *dataplanes[3] = { data , data + el_len_, data + el_len_ + el_uv_len_ };
@@ -1398,9 +1397,6 @@ int	detect_pixel_format_with_ffmpeg( const char *filename )
 	AVCodec *codec = NULL;
 	AVCodecContext *codec_ctx = NULL;
 	AVFormatContext *avformat_ctx = NULL;
-	AVStream *avformat_stream = NULL;	
-	AVInputFormat *av_input_format = NULL;
-	AVFrame *av_frame = NULL;
 	AVPacket pkt;
 #if LIBAVCODEC_BUILD > 5400
 	int err = avformat_open_input( &avformat_ctx, filename, NULL, NULL );
@@ -1493,7 +1489,6 @@ further:
 	}
 
 	codec_ctx = avformat_ctx->streams[vi]->codec;
-	avformat_stream=avformat_ctx->streams[vi];
 #if LIBAVCODEC_BUILD > 5400
 	if ( avcodec_open2( codec_ctx, codec, NULL ) < 0 )
 #else
@@ -1507,7 +1502,6 @@ further:
 
 	veejay_memset( &pkt, 0, sizeof(AVPacket));
 	AVFrame *f = avcodec_alloc_frame();
-	int input_pix_fmt = -1;
 
 	int got_picture = 0;
 	while( (av_read_frame(avformat_ctx, &pkt) >= 0 ) ) {
@@ -1694,7 +1688,6 @@ int	test_video_frame( lav_file_t *lav,int out_pix_fmt)
 
 int	vj_el_get_audio_frame(editlist *el, uint32_t nframe, uint8_t *dst)
 {
-    long pos, asize;
     int ret = 0;
     uint64_t n;	
 	int ns0, ns1;
@@ -1726,9 +1719,6 @@ int	vj_el_get_audio_frame(editlist *el, uint32_t nframe, uint8_t *dst)
     ns1 = (double) (N_EL_FRAME(n) + 1) * el->audio_rate / el->video_fps;
     ns0 = (double) N_EL_FRAME(n) * el->audio_rate / el->video_fps;
 
-    //asize = el->audio_rate / el->video_fps;
-    pos = nframe * asize;
-
     ret = lav_set_audio_position(el->lav_fd[N_EL_FILE(n)], ns0);
 
     if (ret < 0)
@@ -1790,7 +1780,6 @@ int	vj_el_init_422_frame(editlist *el, VJFrame *frame)
 int	vj_el_get_audio_frame_at(editlist *el, uint32_t nframe, uint8_t *dst, int num )
 {
 	// get audio from current frame + n frames
-    long pos, asize;
     int ret = 0;
     uint64_t n;	
     int ns0, ns1;
@@ -1816,7 +1805,6 @@ int	vj_el_get_audio_frame_at(editlist *el, uint32_t nframe, uint8_t *dst, int nu
     ns0 = (double) N_EL_FRAME(n) * el->audio_rate / el->video_fps;
 
     //asize = el->audio_rate / el->video_fps;
-    pos = nframe * asize;
     ret = lav_set_audio_position(el->lav_fd[N_EL_FILE(n)], ns0);
 
     if (ret < 0)

veejay-current/veejay-server/libel/vj-mmap.c

@@ -63,7 +63,6 @@ int	is_mapped( mmap_region_t *map, int offset, int size )
 {
 	// check if memory is in mapped region
 	off_t real_offset = PADDED( offset, map );
-	size_t padding    = offset % map->page_size;
 
 	long rel_o = (map->mem_offset > 0 ? offset - map->mem_offset : offset );
 
@@ -129,7 +128,6 @@ int	munmap_file( mmap_region_t *map )
 
 int	mmap_read( mmap_region_t *map,int offset, int bytes, uint8_t *buf )
 {
-	size_t padding = offset % map->page_size;
 	if( !is_mapped( map, offset, bytes ))
 	{
 		remap_file( map, offset );